Crank casing



July 26, 1927. 1,636,756

W. B. POHLE CRANK CASING Original Filed'Dec- 26. 1925 Inventor:

Patented July 26, 1927.

UNETED STATES PATENT OFFICE.

VJALTER B. IPOHLE, OF LYNN, MASSAGHUSETTS, ASSIGN-OR OF ONE-THIRD TO PARKER 13. HASKELL, OF LYNN, MASSACHUSETTS, ANDONE-THIRD TO SUSAN V.. RUSSELL,

CRANK CASING.

Application filed December 26, 1925, Serial No. 77,843. Renewed December 7, 1926.

This invention relates to crank casings and particularly to crank caslngs which have formed integral therewith a plurality of transversely disposed splash'troughs, the object of the present invention being to provide means adapted'to be attached to the bottom of said troughs in which sediment may be collected and withdrawn at will and a new supply of oil admitted to said troughs.

Another object of'the invention is the provision of a sediment collecting depression formed in the bottom of the casing and provided with a normally closed opening in one wall through which the sediment may be removed from said depression.

For the purpose of illustratingthe invention, one preferred form thereof is illustrated in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists can be variously ar- 'ierein shown and described except as required by the scope of the appended claims.

Of the drawings:

Figure l'represents a longitudinal vertical section of a crank casing embodying the principles of the present invention.

Figure 2 represents a transverse section of same on line 2, 2 on Fig. 1, and

Figure 3 represents an enlarged transverse section of one ofthe troughs showing a sediment receptacle removably. secured to the bottom thereof.

Similar characters indicate like parts throughout the several figures of the crawings.

In the drawings, 10 is a crank casing the bottom 11 of which inclines downwardly from the opposite ends thereof to a sediment collecting depres ion 12 formed integral therewith.

Transversely disposed in the crank casing 10 and formed integral therewith are a plu rality of splash troughs 13 through each of which the end of a crank 14 passes in its rotation about the axis of the shaft 15 to which all of the cranks 14: for the various troughs are secured.

Each trough 13 has an opening 16 in the lowest part of its bottom wall 17 communigasket 20 is interposed between the flange 19 and the bottom wall 17 and the flange 19 is (iii secured to said wall 17 by means of screws or bolts 21. I

In one wall of the depression 12 is an opening normally closed by a threaded plug 22 whichxma-y be removed to give access to the interior of said depression 12 so that the sediment may be removed therefrom, the

oil in the casing being discharged at the same time preparatory to the admission of a fresh supply of oil to the casing 10.

-Each sediment receptacle 18 also has an opening extending therefrom through one wall of the casing which'is normally closed by'a threaded plug 28 adapted to be removed to'provide means for removing the sediment from the receptacle-18 and the oil from the trough-'18 to which it is attached.

This cleaning operation may beperfor-med at onetrough at,a time without disturbing the other troughs.

Each trough is provided in one wall with an opening normally closed by a threaded plug 24 which may be removed to admit into said trough a fresh supply of oil.

Many crank casings now in use have the splash troughs thereof formed integral therewith and are provided with no means for removing the sediment collecting therein, except by removing the entire casing and cleaning out the various troughs which occupies considerable time, entails much labor, and places the motor out of commission until the casing is replaced and a fresh supply of oil is installed. 7

These crank casings thus constructed may be used in carrying out the present invention by cutting the openings 16 in the bottom of the various troughs 13 and then welding or otherwise securing a sediment receptacle 18 to the under wall 17 of each trough.

The casing 10 itself may have its bottom wall reshaped to form the depression 12 therein.

' The threaded openings for the plugs 22, 23, 2 may thenbe drilled, threaded, and these plugs inserted.

When this has been accomplished the easing is so constructed that the sediment in the oil in the various troughs is permitted to pass through the openings 16 in the troughs out of the path of the crank 14: so that the oil in the troughs will be perfectly clear in thetrough 13 and no grit or sediment can be splashed upon the various hearings to interfere with the proper working thereof.

Each trough may then be cleaned independently of the others and if one of said troughs is being cleaned and the use of the motor is unexpectedly required, the plug 23 may be quickly replaced, the trough 13 being cleansed can be given a new supply of oil and the plug 2 1 replaced and the apparatus will be ready for immediate use.

This is of prime importance where the motor is installed upon a fire trucker the like which are liable to be called into action at any time during the day and night.

All cleansing operations on thesetrucks must be performed expeditiously and applicant has provided a means whereby this may be accomplished.

The sediment receptacles may be made of large capacity if desired so. that they may go without cleaning for long periods as when the sediment collects therein there will be no opportunity for it to mix again with the oil in the troughs 13 and interfere with the proper working of the motor.

When a new supply of oil is required for the casing 10 the old oil may be discharged by removing the plug 22, the oil in passing from the outlet carrying with it all the sediment in the depression 12.

It is believed that the operation and many advantages of the present invention will be fully tion.

Having thus described my invention, I claim 1. A crank casing having formed integral therewith a plurality ofsplash troughs extending transversely thereof and through which the ends of the cranks pass during their rotation, each trough having an opening in the lowest part of its bottom and a sediment receptacle fixedly secured to the under face of said bottom of each trough and always in communication with said opening.

2. ,A crank casing provided with a plurality of splash troughs extending transversely thereof and through which the ends of the cranks .pass during their rotation, each trough having an opening in the lowest part of its bottom and a sediment receptacle secured to the under face of said bottom and communicating with said opening, one wall of the casing beingprovided with an outlet from said receptacle normally closed by a removable plug.

3. A crank casing provided with a plurality of splash troughs extending transversely thereof and through which the ends of the cranks pass during their rotation, each trough having a sediment pocket in the lowest part of its bottom below the path of the crank, and an opening in one wall of the casing for each trough normally closed by a removable plug and through which a fresh supply of oil may be admitted to said trough. I

a. A crank casing provided with a plurality of splash troughs extending transversely thereof and through which the ends of the cranks pass during their rotation each trough having a sediment pocket in the lowest part of its bottom below the path of the crank, and said casing having at the lowest part of its bottom a sediment collecting depression provided with an opening in a Wall thereof normally closed by a removable plug and through which the sediment may be removed from said depression.

Signed by me at 746 Old South Bldg, Boston, Mass, this 24th day of November,

WALTER B. POHLE.

understood without further descrip 

